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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* =============================================================================
* Modifications Copyright (C) 2019 Ericsson
* Modifications Copyright (C) 2019 IBM
* =============================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* ============LICENSE_END=========================================================
*/
package org.onap.appc.listener.demo.impl;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import java.net.URL;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.io.IOUtils;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.json.JSONObject;
import org.onap.appc.exceptions.APPCException;
import org.onap.appc.listener.demo.model.IncomingMessage;
import org.onap.appc.listener.util.HttpClientUtil;
import org.onap.appc.listener.util.Mapper;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
public class ProviderOperations {
private static final EELFLogger LOG = EELFManager.getInstance().getLogger(ProviderOperations.class);
private static URL url;
private static String basic_auth;
//@formatter:off
@SuppressWarnings("nls")
private final static String TEMPLATE = "{\"input\": {\"common-request-header\": {\"service-request-id\": \"%s\"},\"config-payload\": {\"config-url\": \"%s\",\"config-json\":\"%s\"}}}";
//@formatter:on
/**
* Calls the AppcProvider to run a topology directed graph
*
* @param msg
* The incoming message to be run
* @return True if the result is success. Never returns false and throws an exception instead.
* @throws UnsupportedEncodingException
* @throws Exception
* if there was a failure processing the request. The exception message is the failure reason.
*/
@SuppressWarnings("nls")
public static boolean topologyDG(IncomingMessage msg) throws APPCException {
if (msg == null) {
throw new APPCException("Provided message was null");
}
HttpPost post = null;
try {
// Concatenate the "action" on the end of the URL
String path = url.getPath() + ":" + msg.getAction().getValue();
URL serviceUrl = new URL(url.getProtocol(), url.getHost(), url.getPort(), path);
post = new HttpPost(serviceUrl.toExternalForm());
post.setHeader("Content-Type", "application/json");
post.setHeader("Accept", "application/json");
// Set Auth
if (basic_auth != null) {
post.setHeader("Authorization", "Basic " + basic_auth);
}
//String body = buildReqest(msg.getId(), msg.getUrl(), msg.getIdentityUrl());
String body = buildReqest(msg.getHeader().getRequestID(), msg.getPayload().getGenericVnfId(), msg.getPayload().getStreams());
StringEntity entity = new StringEntity(body);
entity.setContentType("application/json");
post.setEntity(new StringEntity(body));
} catch (UnsupportedEncodingException | MalformedURLException e) {
throw new APPCException(e);
}
HttpClient client = HttpClientUtil.getHttpClient(url.getProtocol());
int httpCode = 0;
String respBody = null;
try {
HttpResponse response = client.execute(post);
httpCode = response.getStatusLine().getStatusCode();
respBody = IOUtils.toString(response.getEntity().getContent());
} catch (IOException e) {
throw new APPCException(e);
}
if (httpCode == 200 && respBody != null) {
JSONObject json;
try {
json = Mapper.toJsonObject(respBody);
} catch (Exception e) {
LOG.error("Error prcoessing response from provider. Could not map response to json", e);
throw new APPCException("APPC has an unknown RPC error");
}
boolean success;
String reason;
try {
JSONObject header = json.getJSONObject("output").getJSONObject("common-response-header");
success = header.getBoolean("success");
reason = header.getString("reason");
} catch (Exception e) {
LOG.error("Unknown error prcoessing failed response from provider. Json not in expected format", e);
throw new APPCException("APPC has an unknown RPC error");
}
if (success) {
return true;
}
String reasonStr = reason == null ? "Unknown" : reason;
LOG.warn(String.format("Topology Operation [%s] failed. Reason: %s", msg.getHeader().getRequestID(), reasonStr));
throw new APPCException(reasonStr);
}
throw new APPCException(String.format("Unexpected response from endpoint: [%d] - %s ", httpCode, respBody));
}
/**
* Updates the static var URL and returns the value;
*
* @return The new value of URL
*/
public static String getUrl() {
return url.toExternalForm();
}
public static void setUrl(String newUrl) {
try {
url = new URL(newUrl);
} catch (MalformedURLException e) {
LOG.error("Malformed URL", e);
}
}
/**
* Sets the basic authentication header for the given user and password. If either entry is null then set basic auth
* to null
*
* @param user
* The user with optional domain name
* @param password
* The password for the user
* @return The new value of the basic auth string that will be used in the request headers
*/
public static String setAuthentication(String user, String password) {
if (user != null && password != null) {
String authStr = user + ":" + password;
basic_auth = new String(org.apache.commons.codec.binary.Base64.encodeBase64(authStr.getBytes()));
} else {
basic_auth = null;
}
return basic_auth;
}
/**
* Builds the request body for a topology operation
*
* @param id
* The request id
* @param url
* The vm's url
*
* @param pgstreams
* The streams to send to the traffic generator
*
* @return A String containing the request body
*/
private static String buildReqest(String id, String url, String pgstreams) {
return String.format(TEMPLATE, id, url, pgstreams);
}
}
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